Ibm-db-sa

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* Changes for support of SQLAlchemy 2.0.x (127) (bchoudhary6415)

* Some changes to support for SQLAlchemy 2.0 and resolved denormalise name error (126) (bchoudhary6415)

* Support for SQLAlchemy 2.0 (124) (bchoudhary6415)

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* Made some changes for release 039 (121) (bchoudhary6415)

* Release 039 (120) (bchoudhary6415)

* resolve merge conflicts (Bimal Jha)

* don't mutate URL object (116) (Edwin Onuonga)

* Fix offset condition (117) (Edwin Onuonga)

* indentation change for changes file (amukherjee)

* Added missing columns for the previous commit (Sasa Tomic)

* Fix for reflection get_primary_keys (Sasa Tomic)

* DB2 may not return the column names in SYSCOL.INDEXES (Sasa Tomic)

* pyodbc mods (openmax)

* implemented iseries db2 dialect inside PASE environment (openmax)

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- autoload bug fix with SQLAlchemy 1.4.x
- remove warning message while connection
- add columns reflection with comments
- other bug fixes reported

2021/07/19
- add support for sqlalchemy 1.4
- Missing none check for dbma_name
- Set issolation level
- Other bug fixes

2021/03/03
- issolation level bug fix.

2020/12/07
- Added ZOS server support for applications to connect
- Added Iseries server support for application to connect
- Add CurrentSchema key word as part of connection string support
- Added fix for multiple issues

2019/05/30
- Added fix for missing "CURRENT ISOLATION" register
- Fixed Autocommit not working for pyodbc
- Fixed NameError: name 'asbool' is not defined python

2016/08/29
- Fixed multiple defects mentioned below
- Add documentation on alchemy url for conncetion over ssl
- DB2 on AS400: An unexpected token "ISOLATION" was found on ibm_db_sa/ibm_db.py
- Getting AttributeError for AS400
- name 'unicode' is not defined
- AttributeError when using pyodbc
- add capability to the driver to generate query with literals, compile_kwargs={"literal_binds": True}

2016/08/30
-Added Support for Python 3.x

- Added SSL support
- Added get_incoming_foreign_keys functionality with reflector
- Added get_unique_constraints reflection feature
- Added exist() unary operator support within select clause
- Fixed incompatible issue of sql.true() for SQLAlchemy v0.7.x & 0.8.x
- Fixed add_constraint incompatible issue with SQLAlchemy-0.9.x
- Fixed reflection function get_indexes to not return the unique constraint participating index

- Handle Double Type in DDL Generator
- Translating 'update' and 'read' lock-mode with DB2 compatible SQL
- Added Stored procedure with outparam support in ibm_db_sa dialect
- Convert nullable unique constraint to unique index exclude nulls for DB2 10.5
- Fix to detect invalid connection
- Added support for CHAR_LENGTH function support
- Fix drop index implementation incompatibility with SQLAlchemy-0.8.x onwards
- Add/Fix support for zxjdbc for both IBM DB LUW and AS/400
- Add/Fix support for PyODBC for both IBM DB LUW and AS/400
- Fix reflection for get_lastrowid

- Add support for LIMIT/OFFSET
- Add support for savepoints
- Add support for double-precision floating-point number
- Fixed reflection for get_view_names and get_view_definition

2013/02/06
- Add support for SQLAlchemy 0.7/0.8
- Refactor code layout
- Now supporting "db2://" scheme as well as
"ibm_db://" for backwards compatibility
- Add/fix support for explicit sequences

2011/09/27 (IBM_DB_SA adapter 0.2.1):
- fix reflection problem
- support alternate DB2 LUW connection via PyODBC
- support alternate DB2 i5/OS (iSeries) via PyODBC
- support alternate DB2 i5/OS (iSeries) via ZxJDBC (Jython)

2011/08/28 (IBM_DB_SA adapter 0.2.0):
- Support of SQLAlchemy 0.6/0.7
- Add Jython support

2008/11/06 (IBM_DB_SA adapter 0.1.6):
- fixed Metadata not loading any table info (defect 158705)
- fixed problems while using different schema names (defect 163785)
- fixed keyerror in length in visit_function (defect 166292)